Title: Processed meat packaging tube and method of packaging

Abstract: A processed meat packaging tube is a tube of an orientated laminated film having more than 5% of a shrinkage coefficient at 80.degree. C., less than .+-.5% of percent elongation-shrinkage at 80.degree. C. under tensile modulus of 20 Kg/cm.sup.2 and more than 8 Kg/cm.sup.2 of tightening modulus at 5.degree. C. and more than 1.0.times.10.sup.3 Kg/cm.sup.2 of a tensile modulus of elasticity at 80.degree. C. which is formed by stretching a composite film having an inner layer made of an oxygen barrier thermoplastic resin having less than 1.times.10.sup.-11 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg (measured by Seikaken method) of oxygen permeability coefficient and outer layers made of the other thermoplastic resin having smaller water absorption than that of the inner layer.

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Inventors: Wakamatsu, Shigehiro (Nagahama, JP)
Abe, Takashi (Nagahama, JP)

Application Number: 932016
Filing Date: 1978-08-08
Publication_date: 1980-04-08
Assignee: Mitsubishi Plastics Industries Limited (Tokyo, JP)
Primary Class(es): 426/412 138/118.1, 138/177, 426/127, 426/413, 426/414, 426/415, 428/34.8, 428/476.1, 428/483, 428/515, 428/516, 452/30
Other Classes:
US Patent Ref:

3423231	Jan, 1969	Lutzmann	428/474.
3595740	Jul, 1971	Gerow	428/474.
3669692	Jun, 1972	Turbak	138/118.
3753828	Aug, 1973	Manne et al.	428/483.
3826676	Jul, 1974	Heling et al.	138/118.
3840427	Oct, 1974	Brazier et al.	428/474.
3925591	Dec, 1975	Breitenfellner et al.	428/483.
3997383	Dec, 1976	Bieler et al.	428/516.
4064296	Dec, 1977	Bornstein et al.	428/515.

Other Refs:
Primary Examiner: Dixon, Jr., William R.
Assistant Examiner:
Attorney: Oblon, Fisher, Spivak, McClelland & Maier